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life science 11/6/12

Question Answer
diffusion of water through a membrane? osmosis
which of following not found in all cells? cell wall
which of following does not belong 2 the other 3?plant cell-cell wall animal cell- cell membrane or cilia cilia
number of layers in the cell membrane? 2
tiny organs found in the cell? organelles
This person is credited with discovering the beestes and other things on his microscope? Anton Von Leevanhook
thin covering forms outer boundry of a cell? cell membrane
the control center of the cell? nucleus
the power house of the cell? mitochondria
a series of folded membranes found in the cytoplasm used for transportation? ER (Endoplasmic Reticulum)
organnele responsible for packaging the proteins of the cell? Golgi bodies
structure that stores food, water in waste in plants? vacuoles
Organelle found only in plants needed to carry out for photosynthesis? chloroplasts
organnelle that contains digested enzymes? lysosome
these are structures made of genetic coded messages? chromosomes
sight of protein synthesis? ribosomes
the widely accepted model for the cell membrane? fluid mosaic
Why is a cell prefered to be selectively permeable?* because it only allows certain things to enter the cell or leave the cell
what is the difference between active and passive transport?* passive is the movement of molecules that requires no energy from the cell. & active is when the movement of molecules that requires energy.
what is the difference between rough and smooth ER?* rough has ribosomes attached and smooth has no ribosomes attached.
what are the 2 types of passive transport?* osmosis & diffusion
what is the difference between cilia & Flagella? cilia are short and many and flagella are long and their are fewer.
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